package com.cc.handler;

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;

import java.util.Date;
import java.util.Objects;

/**
 * @author cc
 * @version 1.0
 * @date 2021/12/14 15:02
 */
@Component //将处理器加入到Spring IOC容器中
@Slf4j
public class MyMetaObjectHandler implements MetaObjectHandler {
    //插入时的填充策略
    @Override
    public void insertFill(MetaObject metaObject) {
        log.info("start insert fill........");
        /*default MetaObjectHandler setFieldValByName(String fieldName, Object fieldVal, MetaObject metaObject) {
            if (Objects.nonNull(fieldVal) && metaObject.hasSetter(fieldName)) {
                metaObject.setValue(fieldName, fieldVal);
            }
            return this;
        }*/
        this.setFieldValByName("createTime",new Date(),metaObject);
        this.setFieldValByName("updateTime",new Date(),metaObject);
        this.setFieldValByName("createUserId","123456",metaObject);
        this.setFieldValByName("createUserName","cc",metaObject);
        this.setFieldValByName("updateUserId","123456",metaObject);
        this.setFieldValByName("updateUserName","cc",metaObject);
    }
    //更新时的填充策略
    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("update insert fill........");
        this.setFieldValByName("updateTime",new Date(),metaObject);
        this.setFieldValByName("updateUserId","666666",metaObject);
        this.setFieldValByName("updateUserName","hh",metaObject);
    }
}
